n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 26 |
5 | 111 |
6 | 562 |
7 | 3151 |
8 | 19252 |
9 | 128449 |
10 | 925226 |
11 | 7125009 |
12 | 58399156 |
13 | 507222535 |
14 | 4647051970 |
15 | 44747776651 |
16 | 451520086208 |
17 | 4761032807937 |
18 | 52332895618066 |
19 | 598351410294193 |
20 | 7102331902602676 |
21 | 87365859333294151 |
22 | 1111941946738682522 |
23 | 14621347433458883187 |
[1,1,2,7,26,111,562,3151,19252,128449,925226, 7125009,58399156,507222535,4647051970,44747776651, 451520086208,4761032807937,52332895618066, 598351410294193,7102331902602676, 87365859333294151,1111941946738682522, 14621347433458883187] |